Dodge Ram Truck 1500-2500-3500. Manual — part 224

COOLING

DESCRIPTION

GAS ENGINE

The cooling system regulates engine operating temperature. It allows the engine to reach normal operating temper-
ature as quickly as possible. It also maintains normal operating temperature and prevents overheating.

Engine Cooling System Flow - 3.7L/4.7L

7 - 2

COOLING

DR/DH

The cooling system provides a means of heating the passenger compartment and cooling the automatic transmis-
sion fluid (if equipped). The cooling system is pressurized and uses a centrifugal water pump to circulate coolant
through the system. The coolant recovery/reserve system utilizes an ambient overflow bottle and

5.7L Engine Coolant System Flow

DR/DH

COOLING

7 - 3

An optional factory installed maximum duty cooling package is available on most models. This package will provide
additional cooling capacity for vehicles used under extreme conditions such as trailer towing in high ambient
temperatures.

8.3L Cooling System

7 - 4

COOLING

DR/DH

5.9L DIESEL

Cooling System Circulation - 5.9L Diesel Engine

DR/DH

COOLING

7 - 5